ACP2E-3103: New Products RSS feed is not updated with new products due to cache

Author: abukatar

app/code/Magento/Catalog/Block/Rss/Product/NewProducts.php

@@ -5,10 +5,10 @@
  */
 namespace Magento\Catalog\Block\Rss\Product;
 
-use Magento\Framework\App\Rss\DataProviderInterface;
+use Magento\Framework\App\Rss\DataProviderInterface as DProviderInterface;
+use Magento\Framework\DataObject\IdentityInterface as IdInterface;
 
-class NewProducts extends \Magento\Framework\View\Element\AbstractBlock implements DataProviderInterface,
-    \Magento\Framework\DataObject\IdentityInterface
+class NewProducts extends \Magento\Framework\View\Element\AbstractBlock implements DProviderInterface, IdInterface
 {
     public const CACHE_TAG = 'rss_p_new';
 

app/code/Magento/Catalog/Test/Unit/Model/ProductTest.php

@@ -983,7 +983,7 @@ private function getNoStockStatusChangesData(MockObject $extensionAttributesMock
     private function getNewProductProviderData(): array
     {
         return [
-            ['cat_p_1', 'cat_c_p_1', 'cat_p_new'],
+            ['cat_p_1', 'cat_c_p_1', 'cat_p_new', 'rss_p_new'],
             null,
             [
                 'id' => 1,

app/code/Magento/Rss/Controller/Feed/Index.php

@@ -9,7 +9,7 @@
 use Magento\Framework\DataObject\IdentityInterface;
 use Magento\Framework\Exception\NotFoundException;
 
-class Index extends \Magento\Rss\Controller\Feed
+class Index extends \Magento\Rss\Controller\Feed implements \Magento\Framework\App\Action\HttpGetActionInterface
 {
     /**
      * Index action